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Quadratic Equation question
How do i get from:
\[x=11\pm \frac{12160}{ 6 }\]
to the next part?
 one year ago
 one year ago
Quadratic Equation question How do i get from: \[x=11\pm \frac{12160}{ 6 }\] to the next part?
 one year ago
 one year ago

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cos00155079Best ResponseYou've already chosen the best response.0
im working on those problems too im not that good but i would simplify 1216/ then.. which is?
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
well first of all.....write out two different equations to eliminate that +
 one year ago

andriod09Best ResponseYou've already chosen the best response.0
@cos00155079 you doing the Life of Fred series?
 one year ago

andriod09Best ResponseYou've already chosen the best response.0
you don't have to do that @jwheele1
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
i know you dont have to but its easier...its cool we wont do that then
 one year ago

cos00155079Best ResponseYou've already chosen the best response.0
why 60/6 if it was a 61?
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
alright lets see now...
 one year ago

andriod09Best ResponseYou've already chosen the best response.0
the equation is: \[x=11\pm \frac{ \sqrt{12160} }{ 6 } \]
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
whats with teh line over the 0?
 one year ago

andriod09Best ResponseYou've already chosen the best response.0
its just how it is. not my doing.
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
well...it means that its a repeating number but its usually only after a decimal point...weird.
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
I have no idea what to do with the 60 and the line over it.
 one year ago

andriod09Best ResponseYou've already chosen the best response.0
the original equation is: \[3x^{2}+11x+5=0\]
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
any specific way she is wanting you to go about that?
 one year ago

andriod09Best ResponseYou've already chosen the best response.0
its a messup about square roots.
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
or can we solve for x any old way?
 one year ago

andriod09Best ResponseYou've already chosen the best response.0
yea, using \[ax^{2}+bx+c=0\] and the \[x=b\pm\frac{ \sqrt{b^{2}4ac} }{ 2a }\]
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
the QuAdRaTiC ForMulA.....lol
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
ok so 3x^2 + 11x +5 = 0 ax^2 + bx +c
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
\[11\pm \frac{ \sqrt{11^{2}4(3*5c)} }{ 2(3) }\]
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
does that look right?
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
ignore the c next to the 5, lol dw:1348620564257:dw
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
dw:1348620625370:dw
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
i see where we screwed up now in the beginning
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
dw:1348620687638:dw
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
NOW......what has your teacher said to do with this?
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
because you can find common denominaters and put it all over one bar or you can leave it the way it is.
 one year ago

andriod09Best ResponseYou've already chosen the best response.0
I teach my self. I am homeschooled, i use the LoF series.
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
well....you could work it out to this way if you wanted to.... dw:1348620830185:dw
 one year ago

andriod09Best ResponseYou've already chosen the best response.0
the last answer i got was \[x_{1}\] and \[x_{2}\]
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
OH yeah...i forgot this was all part of an original equation....this one might be too complicated for the quad formula. have you tried grouping method?
 one year ago

andriod09Best ResponseYou've already chosen the best response.0
and it was \[x=\frac{9\pm7} { 8 }\] I did the quadratic formula on all of these so far, its a quadratic formula page. they're supposed to use the quadratic formula
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
ok well then we must find exact values
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
the sq rt of 61 is 7.810249675906654
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
divided by 6 = 1.301708279317776
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
11 + 1.301708279317776 = ? 11  1.301708279317776 = ?
 one year ago

andriod09Best ResponseYou've already chosen the best response.0
we need not find exact values, we need to find \[x_1\] and \[x_2\]
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
x1 and x2 are exact values
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
it appears anyways...this one is ugly
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
x1 = 9.698291720682224, x2 = 12.30170827931778 lol
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
none of this seems right to me and its driving me nuts, lol
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
for sure you need to find the square root of 61
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
which is not what you have in your original problem at the top
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
http://www.mathsisfun.com/quadraticequationsolver.html
 one year ago

andriod09Best ResponseYou've already chosen the best response.0
its these: \[x_{1}=\frac{ 11+\sqrt{61} }{ 6 }\] and \[x_{1}=\frac{ 11\sqrt{61} }{ 6 }\]
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
thats what i would put....what you just put
 one year ago

andriod09Best ResponseYou've already chosen the best response.0
this is what my brother says, who is in college.
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
i am also in college. I woudl also stop there...I thought it was weird that were were trying to find the actual value for x1 and 2
 one year ago

andriod09Best ResponseYou've already chosen the best response.0
dw:1348621589793:dw
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
That is if you put it all under one common denominator which some teachers ask for...usually that is not what they want though
 one year ago

jwheele1Best ResponseYou've already chosen the best response.2
it means the same thing but most people show it liek yoru brother did
 one year ago

andriod09Best ResponseYou've already chosen the best response.0
w/e i have it and its done. thanks for any help!
 one year ago
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